Printing-machine.



W. SCOTT, DBGD. I. a n. J. soor'r, nxnou'rons.

, PRINTING ,MAOEINE.

APPLIOLTIOR mum JULY 3. 190a.

Patented Oct. 31, 1911.

' WIJA WRAP" $0., IAIWLNG'ION. D.

WALTER SCOTT, 0F PLAINFIELD, NEW JERSEY;

ISABELLA SCOTT AND DAVID JOHN SCOTT EXECUTORS OF SAID WALTER SCOTT,DECEASED.

PRINTING-MACHINE.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Application filed July 3, 1905. Serial No. 268,023.

To all whom it may concern:

Be it known that I, WALTER Soon, a citizen-of the United States ofAmerica, and a resident of Plainfield, Union county, New Jersey, haveinvented certain new and useful Improvements in Printin -Machines, ofwhich the following is a speci cation.

The present invention relates generally to printing machines, and hasmore particularly reference to tripping mechanism used in connectiontherewith.

In printing machines, whether rotary or flat bed, such as two or threerevolution or other machines, it is customary to trip the impressionautomatically once to each cycle of the machine. This may beaccomplished by moving the form carrying member out of contact with theimpression cylinder, but preferably, and as shown herein, it isaccomplished by moving the impression cylinder out of contact with theform carrying member. Means are further rovided for interrupting theoperation of t 1e autoniatic means so as to maintain the parts tripped.When this takes place and the supply of ink is not being used, the inkaccumulates on the distributing rolls, or other distributing surface,and on the form.

To overcome this objectionable condition is the object of the presentinvention.

This invention consists of an interrupting means for the inkingapparatus under the control of the automatic means for tripping anduntripping the im ression, the parts being so arranged that d iiring thenormal operation of the tripping means the ink tripping means remalninoperative, and are actuated only by the automatic tripping and untriping means when the normal operation of the latter is interrupted by theinterrupting means.

This invention forms but in the roll is prevented from transferrin thedistributing surface. When in 'ng up the form, however)1 before printincommences, it is desira e to malntain t e immay of course take manypresent instance the ductor ink to pression tripped without stopping thesupply of ink.

The invention further consists in meanswhereby the operation of theautomatic tripping and untripping means can be interrupted by theinterrupting means without sto ping the supply of ink.

ther features of construction will appear as the specification proceeds.

In the drawings, the'mvention has been embodied in a suitable form, butit is obvious that changes in construction may be made without departingfrom the spirit of the invention.

In the said drawings: Figure 1 is a side elevation, part1 in section andwith parts broken away s owing a printing machine of the charac erindicated with the ink tripping means applied. Fig. 2 is a view look-.Ing in the direction of the arrow 2 of Fig. 1, showing certain detailsof the mechanism. Fig. 3 is a detail view of the cam for operating theductor roll. Fig. 4 is a detail view of means for rendering the inktrippin mechanism inoperative.

A though various means may be employed for effecting the tripping of theinking mechanism, the specific construction here disclosed shows meansfor preventing the ductor roll from transferring ink from the fountainroll to the distributing rolls.

1 indicates a framework of any suitable construction for r'o'perlisupporting the parts comprising t e mac inc.

2 indicates the im by the journal 3. T is journal 3 is mounted in slidinframes or standards 4, one on each side of t e machine, but only one ofwhich is seen.

The form carryin means in the present instance consist of t ereciprocating bed 5 on which is mounted the plate or type or other meansconstituting the form 6.

7 and 8 indicate two groups of distributing rolls such as are usuallemployed in machines of this character orming a distributing surface andadjacent to the group ression cylinder carried of distributing rolls 7is a fountain 9 in which is located a fountain roll 10. This fountainroll may be of an usual or suitable construction and may either rotatecontinuously or intermittently or may be operated in any other way founduseful.

The ink is transferred, as is customary, from the fountain roll to thedistributing rolls by means of the ductor roll 11 pivoted at 12 andoperated in the usual manner from the cam 13 mounted on the shaft 14 andmaking one revolution to each impression or to each completereciprocation of the bed. The motion of this cam is transferred to theductor roll by means of the friction roll 15 carried by the lever 16connected with the lower end of the ductor roll by means of the rod 17.On each return stroke of the bed the standards 4 are moved up and out ofthe way of the form while on the forward movement of the bed theimpression cylinder is moved down so as to be in contact with the saidform as it passes under the same.

Any suitable means'may be utilized to trip and untrip the impressionautomatically once to each cycle of the machine. In the presentinstance, however, there is mounted on the standards 4 a shaft 18conneeted by means of the toggle links 19 to a. fixed bracket 20 on theframework. This shaft 18 is oscillated by means of the cam 21conveniently mounted on the shaft 14 through the instrumentality of therocker 22 pivoted at- 23 and having a friction roll 24 engagin with thesaid cam 21. This rocker 22 urther carries another friction roll 25adapted to engage in the notch 26 of the lever 27 whose other end isconnected by means of the link 28 to the shaft 18. As the cam 21rotates, the rocker 22 will push the lever 27 back and forth therebyoscillating the shaft 18 and raising and lowering the impressioncylinder at the proper periods. Suitable means as a spring 29 is used tobalance the wei ht of the cylinder. The means for interrupting theoperation of the automatic means so as to maintain the parts tripped arepreferably constructed as follows: Mounted on the stud-30 is a rockinand sliding cam 31 which is adapted to li the lever 27 when it isdesired to maintain the cylinder in its tripped position. In order toproperly effect this, there is mounted on the cam 21 or elsewhere, aprojection 32 which is adapted to act on the cam surface 33 of the cam31. As previously stated, this cam 31 both oscillates and slides and isprovided with a pin or other member 34 upon which the free end of thelever 27 rests. This pin is of such length that it will always be incontact with the lever 27. But when it is not desired to maintain thecylinder in its tripped position, the cam is moved sidewise so as tobring the cam surface 33 out of the plane of the passing projection 32.When this cam surface 33, however, is in the plane of 32, the pin 34tends to raise the lever 27 u so as to brin the roll 25 out of the notch26 as shown in the drawin whereby when the cam 21 moves the roe er 22,said roll 25 will move loosely in the slot 35 of the lever 27 withoutoperating the latter. By this means the cylinder remains in its elevatedposition.

The means for controlling the action of the cam 31 as shown in thepresent instance, are those commonly employed in the art and consistpreferably of a foot treadle 36 adapted to act against the counterweight37 when de )ressed, and through the connection 38 pivoted on the stud 39the cam 31 is moved sidewise so as to bring its surface 33 into and outof engagement with the projection 32. Preferably the parts are soarranged that the foot treadle can be depressed at any time during theoperation of the machine so that at the proper moment said cam will beshifted sidewise into the path of the projection 32. This is preferablyeffected by mounting on the pin 30 which is used to move the camsidewise a spring 41' which presses against a collar 42 mounted on thesaid spindle 30 so that when this spring 41 is compressed by the actionof the connection 38 whose two forked arms 43 bear against the saidspring, )ower will be stored whereby when the pro ection 32 has passedthe cam 31, the said cam will be moved sidewise into the plane of thesaid projection 32 so that when the latter comes around on thesucceeding revolution it will encounter the cam surface 33 and tilt thecam 31. The foot pedal 36 is provided with a pin 44 which passes intothe slot 45 of the sleeve 46 when the said foot treadle is depressed andby turning the said pedal around the said pin 4.4 will enter the smallhorizontal slot 47 whereby the parts will be retained in the trippedposition.

Mounted on the ivot 48 is astop 49 operated by means of the connection50 and the bell crank 51 which is pivoted at 52 and whose free end 53rests upon the upper side of the lever 27. Obviously when the said lever27 is raised by the action of the cam 31 it will move the bell crankinto the position shown in fine dotted lines, thereby moving the stop 49into the position also shown in fine dotted lines and against a portion54 of the standards 55 of the ductor roll, thereby preventing the saidductor roll from comin in contact with the said fountain roll an in thatway no ink is transferred from the fountain roll to the distributingrolls, while the mechanism is tripped. It will therefore be understoodfrom the foregoing that the impression cylinder is moved periodicallyand automatically out of contact with the form and in addition to thatit may be tripped so as to remain out of contact with the said form,thereby also tripping the inking mechanism. It is necessary, owever, attimes to operate the inkin mechanism while the cylinder is trippe Thisis especially true before the press is started when it is desired to inkup the distributing rolls and the form before printing commences. Forthat reason it is preferred to construct the stop 49 with a do" 56pivoted at 57 to the said stop and capaldle of being swun out of the wayaround its pivot so that w ion in the position shown in Fig. 4 the inktri ping mechanism will be inoperative and hereby allowing the ductorroll to sup ly ink from the fountain to the distributing roll. hen,

however, it is desired to trip the inking mechanism, the said do 56 ismoved into the position shown in ig. 1, thereby preventing the ductorroll from coming in contact with the fountain roll. A suitable handle asthe pin 58 may be placed on the dog 56' so as to readily swin it backand forth as may be desired. Thls dog is further provided with aprojection ,59 which is adapted to rest upon a portion of the sto 49 asshown in the drawings so as to limit its movement and keep it in theproper position to prevent the ductor roll from moving back and forth.

Of course it will be understood that this device can be applied to anykind of a press whether rotary or bed and cylinder in which the trippingmechanism is used to trip the impression.

What is claimed is:

1. In a printing machine, the combination with the members ofamultirevolution printing couple, and an inking apparatus, of automaticmeans for normally tripping and untripping the impression once to eachcycle of the machine, independent means for 'opcrating the inkinapparatus, normally inoperative means or Interrupting the operation ofthe automatic tripping and untripping means, and means for stopping theo nation of the inking apparatus, normal y inactive to the tripping anduntrippin means but adapted to be actuated by sai tripping anduntripping means when the latter have been acted upon by theinterrupting means, to interrupt the operation of the inking apparatus.

2. In a printing machine, the combination with the members of amultirevolution printing couple, and an inking a paratus, of automaticmeans for normal y tripping and untripping the impression once to eachcycle of the machine, independent means for operating the inkin aparatus, normally inoperative means or interrupting the operation of theautomatic tripping and untripping means, means for stopping theoperation of the inkin apparatus normally inactive to the tripping anduntripping means but adapted to e actuated by said tripping and untriping means when the latter have been acte upon by the interruptin means,to interrupt the operation of the in (ing apparatus, and means wherebythe impression may be maintained tripped without stopping the supply ofink.

3. In a printing machine, the combination with the members of amultirevolution printingcouple, and an inking apparatus, of normallyoperative means for automatically tripping and untripping the impressiononce to each cycle of the machine and independently of the operation ofthe inking apparatus, normally in operative interrupting means for theinking apparatus normally uninfiuenced by the automatic tripping anduntripping means, and normally inoperative interrupting means adapted,when actuated, to interrupt the normal operation of the automatictripping and untripping means, and to cause the latter to renderoperative the interrupting means for the inking apparatus.

4. In a printing machine, the combination with the members of amultirevolution printing couple, of a cam and a connection forautomatically tripping and untrippin the impression once to each cycleof the madliine, an inking apparatus including a ductor roll, a cam anda connection for operating said ductor roll, interrupting means forlifting the connection of the automatic tripping and untripping means soas to maintain the impression tripped, and means for interrupting theaction of the ductor roll normally inoperative but adapted to beactuated when the connection for operating the automatic tripping anduntripping means is lifted.

5. In a printing machine, the combination with the members of amultirevolution printing couple, and an inking apparatus including aductor roll, ,cf normally operative means for automatically tripping anduntripping the impression once to each cycle of the machine andindependently of the operation of the inking apparatus, normallyinoperative means for interrupting the operation of the automatictripping and untripping means, and means for interru ting the operationof the duct/or roll normal y inoperative but rendered operative by theactuation of the normally inoperative interrupting means for theautomatic tripping and untripping means.

6. In a printing machine, the combination with the members of amultirevolution printing couple, and an inking apparatus including auctor roll, of normally operative ping and untripping means, and tocause the latter to render operative the interrupting means for theductor roll.

Signed at New York this 21st day of June 1905.

WALTER SCOTT.

Witnesses:

G150. A. HOFFMAN, AxEL V. BEEKEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 0! Patents,

Washington, D. O.

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